Concept
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- Preferred Labelskos:prefLabel
heavy rare earth oxide
- URI
- http://resource.geosciml.org/classifier/cgi/commodity-code/heavy-rare-earth-oxide ↗Go to the persistent identifier link
- Within Vocab
- Commodity Code
| Preferred Labelskos:prefLabel | heavy rare earth oxide |
|---|---|
| Definitionskos:definition | As defined by IUPAC, a rare earth element (REE) or rare earth metal is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium.[2] Scandium and yttrium are considered rare earth elements because they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties. |
| Narrowernarrower |
europium (III) oxide
terbium (III,IV) oxide |
| Broaderbroader |
rare earth oxide
|
| See AlsoseeAlso | Commodity Code |
| Notationnotation | 02.04.05.08.2 |
| Is Defined ByisDefinedBy | Commodity Code |